@reactivex/rxjs
Version:
Reactive Extensions for modern JavaScript
62 lines • 2.17 kB
JavaScript
;
var __extends = (this && this.__extends) || function (d, b) {
for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
var Subscriber_1 = require('../Subscriber');
var async_1 = require('../scheduler/async');
/**
* @param delay
* @param scheduler
* @return {Observable<R>|WebSocketSubject<T>|Observable<T>}
* @method sampleTime
* @owner Observable
*/
function sampleTime(delay, scheduler) {
if (scheduler === void 0) { scheduler = async_1.async; }
return this.lift(new SampleTimeOperator(delay, scheduler));
}
exports.sampleTime = sampleTime;
var SampleTimeOperator = (function () {
function SampleTimeOperator(delay, scheduler) {
this.delay = delay;
this.scheduler = scheduler;
}
SampleTimeOperator.prototype.call = function (subscriber, source) {
return source._subscribe(new SampleTimeSubscriber(subscriber, this.delay, this.scheduler));
};
return SampleTimeOperator;
}());
/**
* We need this JSDoc comment for affecting ESDoc.
* @ignore
* @extends {Ignored}
*/
var SampleTimeSubscriber = (function (_super) {
__extends(SampleTimeSubscriber, _super);
function SampleTimeSubscriber(destination, delay, scheduler) {
_super.call(this, destination);
this.delay = delay;
this.scheduler = scheduler;
this.hasValue = false;
this.add(scheduler.schedule(dispatchNotification, delay, { subscriber: this, delay: delay }));
}
SampleTimeSubscriber.prototype._next = function (value) {
this.lastValue = value;
this.hasValue = true;
};
SampleTimeSubscriber.prototype.notifyNext = function () {
if (this.hasValue) {
this.hasValue = false;
this.destination.next(this.lastValue);
}
};
return SampleTimeSubscriber;
}(Subscriber_1.Subscriber));
function dispatchNotification(state) {
var subscriber = state.subscriber, delay = state.delay;
subscriber.notifyNext();
this.schedule(state, delay);
}
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